Question

Which equation does not have $4$ as a solution?

• A. $p+5=9$
• B. $14-p=10$
• C. $\frac{20}{p}=4$
• D. $9p=36$

Answer 1

The correct option is C $\frac{20}{p}=4$

Option A. $p+5=9$

$\Rightarrow p=9-5=4$
Option B. $14-p=10$

$\Rightarrow p=14-10=4$
Option C. $\frac{20}{p}=4$

$\Rightarrow 20=4\times p$
$\Rightarrow p=\frac{20}{4}=5$.
Option D. $9p=36$

$\Rightarrow p=\frac{36}{9}=4$
Hence, correct choice is option C.